。
She served us a fine meal.
Literal
She [topic-は] us [to-に] good meal [object-を] served for-us.
出す ('to put out, to serve, to send out') is a wonderfully versatile verb — beyond food (料理を出す 'serve a dish'), it covers issuing documents, sending mail (手紙を出す), submitting reports (レポートを出す), turning in homework, and many more. The shared image is something moving from inside to outside — your house, your hand, your office. With food, 食事を出す means 'to serve [a meal] to guests.' The ~てくれる layers gratitude onto the action.